Large-current duckbilled connector

Abstract

The invention belongs to the technical field of data communication, and particularly relates to a large-current duckbilled connector which comprises an elastic piece assembly, the elastic piece assembly comprises U-shaped elastic pieces distributed in the plugging direction of the connector, the head ends of the U-shaped elastic pieces are fixed, clamping points are arranged on the side walls of the tail portions of the U-shaped elastic pieces, and the clamping points are matched with limiting holes; and the pull ring assembly comprises a pressing block which moves in the plugging direction of the connector. According to the large-current duckbilled connector in the technical scheme, when the plug-in operation is completed, the clamping point is clamped into the limiting hole, ticking sound is generated at the moment, the connector has the in-place indication function, meanwhile, the clamping point is clamped into the limiting hole, the relative position of the large-current duckbilled connector and external equipment is fixed, and the large-current duckbilled connector is prevented from being damaged. Therefore, the connector has a locking function. The arrangement that the clamping points are clamped into the limiting holes enables the connector in the technical scheme to synchronously have in-place indication and locking functions, a structure does not need to be additionally arranged independently, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of data communication, and particularly relates to a large-current duckbill connector. Background Art

[0002] A duckbill connector is a connector with a duckbill-shaped main body. This design enables it to firmly hold a wire and ensure the stability of the connection. It is usually used to connect a wire to an electrical device, such as a circuit breaker, a switch, etc., to conduct current and fix the wire.

[0003] The existing large-current duckbill connectors on the market do not have a position indication mechanism. When the connectors are inserted into each other, it is impossible to ensure that the insertion is in place. After the insertion is completed, a screw locking method is adopted or there is no locking mechanism. When using the screw locking method, there is a problem of limited use space. In the case of insufficient space, the disassembly and assembly are troublesome. When there is no locking mechanism, the connectors are prone to poor contact during use.

[0004] In view of the above problems, a large-current duckbill connector with a position indication function and a locking function is designed. Summary of the Invention

[0005] The present invention proposes the following technical solutions for the problems in the prior art:

[0006] A large-current duckbill connector is used in cooperation with an external device. The device has a device substrate, and a limiting hole is provided on the device substrate. The connector includes:

[0007] A shrapnel assembly, the shrapnel assembly includes a U-shaped shrapnel distributed along the insertion direction of the connector. The head end of the U-shaped shrapnel is fixed, and a clamping point is provided on the side wall of the tail. The clamping point matches the limiting hole.

[0008] A pull ring assembly, the pull ring assembly includes a pressing block that moves in the insertion direction of the connector.

[0009] The U-shaped shrapnel is located on the moving path of the pressing block. When the pressing block is at the starting position, the pressing block covers the tail end of the U-shaped shrapnel, and the clamping point is inserted into the inside of the limiting hole. When the pressing block moves towards the end position, the pressing block squeezes the tail end of the U-shaped shrapnel, and the tail of the U-shaped shrapnel moves away from the pressing block, and the clamping point disengages from the limiting hole.

[0010] As a preference of the above technical solution, a conical surface B is provided at the position where the pressing block cooperates with the tail end of the U-shaped shrapnel.

[0011] The pull-ring assembly further includes a base block, which is connected to the side wall of the pressing block having the conical surface B. A gap for accommodating the tail of the U-shaped elastic sheet is formed between the base block and the conical surface B. The pressing block and the base block are provided with pull rods distributed along the insertion direction of the connector, and a pull ring is arranged at the movable end of the pull rod.

[0012] As a preference of the above technical solution, a large-current duckbill connector further includes a housing, an inner base assembled inside the housing, and a contact assembly assembled on the inner base;

[0013] The inner base is provided with an installation groove and a sliding groove communicating with the installation groove; the base block is located inside the installation groove, and the pull rod is in sliding fit with the sliding groove.

[0014] As a preference of the above technical solution, the inner base is provided with a limiting groove communicating with the installation groove;

[0015] A spring is cooperatively arranged on the base block, and a limiting block assembled in the limiting groove is arranged at the movable end of the spring.

[0016] As a preference of the above technical solution, the inner base is provided with a positioning groove one communicating with the installation groove, and one end of the base block is inserted into the positioning groove one;

[0017] Two relatively distributed positioning convex blocks A are arranged on the inner base, and a positioning convex block B is formed by the extension of a section of the pull rod away from the pull ring; the pull rod passes through between the two positioning convex blocks A, and when the pressing block moves to the end position, the positioning convex block B is in abutting fit with the positioning convex block A.

[0018] As a preference of the above technical solution, the inner base is provided with an elastic sheet clamping groove, the head end of the U-shaped elastic sheet is assembled inside the elastic sheet clamping groove, gaps are formed between the middle part and the tail end of the U-shaped elastic sheet and the inner base, and the clamping point penetrates through the side wall of the housing and is in fit with the limiting hole.

[0019] As a preference of the above technical solution, a conical surface A is arranged at the position where the tail end of the U-shaped elastic sheet is in fit with the pressing block;

[0020] The inner base is provided with a positioning groove two communicating with the installation groove, and a limiting convex platform is arranged on the U-shaped elastic sheet, and the limiting convex platform is in sliding fit with the positioning groove two.

[0021] As a preference of the above technical solution, the housing includes a housing A and a housing B distributed relatively, the housing A and the housing B are fixed by a rivet group, and the U-shaped elastic sheet penetrates through the end face fitting part of the housing A and the housing B.

[0022] As a preference of the above technical solution, the rivet group includes a plurality of rivets A, and the rivets A connect the housing A and the housing B;

[0023] A plurality of rivets B, which connect the housing A and the housing B and simultaneously abut against the side wall of the inner base, and grooves matching the rivets B are provided on the side wall of the inner base;

[0024] At least one rivet C, which connects the housing A and the housing B and simultaneously penetrates the inner base.

[0025] As a preference of the above technical solution, a strip hole is provided on the pull rod, and the rivet C penetrates the strip hole.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. For the large-current duckbill connector in this technical solution, when the mating operation is completed, the clamping point snaps into the inside of the limit hole, and at this time, there is a ticking sound, so that the connector has the function of in-place indication. At the same time, the setting of the clamping point snapping into the inside of the limit hole fixes the relative position of the large-current duckbill connector and the external device, so that the connector has the locking function; the setting of the clamping point snapping into the inside of the limit hole enables the connector in this technical solution to simultaneously have the functions of in-place indication and locking, without the need to separately add a structure, with a simple structure and convenient operation.

[0028] 2. For the large-current duckbill connector in this technical solution, on the premise of not increasing the size of the original product and not affecting the electrical performance, the functions of in-place indication and locking are added, which improves the stability of the product. When performing product maintenance, only need to control the pressing block to move towards the end position, so that the pressing block squeezes the tail end of the U-shaped elastic piece, and the tail of the U-shaped elastic piece moves away from the pressing block, and the clamping point disengages from the limit hole, then it can be unlocked. Such a structure makes it increase the stability and reliability of the product during application, and the operation is simple and easy to understand, facilitating maintenance and ensuring the safety of the equipment. Description of the Drawings

[0029] Figure 1 Shows a schematic structural diagram of a large-current duckbill connector in Embodiment 1;

[0030] Figure 2 Shows an exploded view of a large-current duckbill connector in Embodiment 1;

[0031] Figure 3 Shows a schematic diagram of the mating state of a large-current duckbill connector in Embodiment 1 with an external device;

[0032] Figure 4 Shows a schematic diagram of the mating state of the inner base, the elastic piece assembly and the pull ring assembly in Embodiment 1;

[0033] Figure 5 Shows a schematic structural diagram of the inner base in Embodiment 1;

[0034] Figure 6 The following is a schematic structural diagram of the shrapnel component in Embodiment 1;

[0035] Figure 7 The following is a schematic structural diagram of the pull ring component in Embodiment 1;

[0036] Figure 8 The following is a position distribution diagram of the rivet group in Embodiment 1.

[0037] Reference numerals: housing 10; housing A 11; housing B 12; rivet group 13; rivet A 131; rivet B 132; rivet C 133;

[0038] inner base 20; shrapnel slot 21; installation slot 22; sliding slot 23; positioning slot 1 24; positioning slot 2 25; limiting slot 26; positioning projection A 27;

[0039] contact component 30;

[0040] shrapnel component 40; U-shaped shrapnel 41; clamping point 42; tapered surface A 43; limiting boss 44;

[0041] pull ring component 50; pull rod 51; pressing block 52; tapered surface B 53; base block 54; spring 55; limiting block 56; pull ring 57; strip hole 58; positioning projection B 59;

[0042] equipment substrate 60; limiting hole 61. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0044] Embodiment 1

[0045] As Figure 3 shown, a large-current duckbill connector is used in cooperation with an external device. The device has an equipment substrate 60, and a limiting hole 61 is opened on the equipment substrate 60. More specifically, a strip groove is opened on the side wall of the equipment substrate 60 corresponding to the connector, and the limiting hole 61 is located at the end position of the strip groove. During the insertion operation, the clamping point 42 is inserted into the limiting hole 61 after being engaged with the strip groove to guide the connector.

[0046] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7As shown in the figure, the connector includes: a spring piece assembly 40. The spring piece assembly 40 includes a U-shaped spring piece 41 distributed along the insertion direction of the connector. The head end of the U-shaped spring piece 41 is fixed, and a clamping point 42 is provided on the side wall of the tail. The clamping point 42 matches the limiting hole 61. More specifically, the head end of the U-shaped spring piece 41 is in the direction of the end position of the pressing block 52, and the tail end of the U-shaped spring piece 41 is in the direction of the starting position of the pressing block 52.

[0047] A pull ring assembly 50. The pull ring assembly 50 includes a pressing block 52 that moves in the insertion direction of the connector.

[0048] The U-shaped spring piece 41 is located on the moving path of the pressing block 52. When the pressing block 52 is in the starting position, the pressing block 52 covers the tail end of the U-shaped spring piece 41, and the clamping point 42 is inserted into the inside of the limiting hole 61. When the pressing block 52 moves towards the end position, the pressing block 52 squeezes the tail end of the U-shaped spring piece 41, and the tail of the U-shaped spring piece 41 moves away from the pressing block 52, and the clamping point 42 disengages from the limiting hole 61.

[0049] In the large-current duckbill connector of this technical solution, when performing the plugging operation with an external device, the pressing block 52 is in the starting position. At this time, the tail of the U-shaped spring piece 41 abuts against the device substrate 60, and the tail of the U-shaped spring piece 41 moves away from the device substrate 60. After the plugging is completed, the clamping point 42 moves to the position corresponding to the limiting hole 61. Under the action of the elasticity of the U-shaped spring piece 41 itself, the U-shaped spring piece 41 returns to the initial state, and the clamping point 42 is snapped into the inside of the limiting hole 61. At this time, there is a ticking sound, indicating that the plugging is in place. When it is necessary to control the disconnection of the connector from the external device, control the pressing block 52 to move towards the end position. At this time, the pressing block 52 squeezes the tail end of the U-shaped spring piece 41, and the tail of the U-shaped spring piece 41 moves away from the pressing block 52, and the clamping point 42 disengages from the limiting hole 61. At this time, no longer control the pressing block 52, and under the action of the elasticity of the U-shaped spring piece 41 itself, the pressing block 52 is squeezed and pushed back to the starting position.

[0050] In this technical solution, when the plugging operation is completed, the clamping point 42 is snapped into the inside of the limiting hole 61. At this time, there is a ticking sound, enabling the connector to have the function of indicating in-place. At the same time, the setting of the clamping point 42 being snapped into the limiting hole 61 fixes the relative position of the large-current duckbill connector and the external device, enabling the connector to have the locking function. The setting of the clamping point 42 being snapped into the limiting hole 61 enables the connector in this technical solution to simultaneously have the functions of indicating in-place and locking, without the need to separately add a structure, with a simple structure and convenient operation.

[0051] In the large-current duckbill connector of this technical solution, without increasing the size of the original product and without affecting the electrical performance, the in-place indication and locking functions are added, which improves the stability of the product. During product maintenance, only need to control the pressing block 52 to move towards the end position, so that the pressing block 52 squeezes the tail end of the U-shaped elastic piece 41, and the tail of the U-shaped elastic piece 41 moves away from the pressing block 52, and the clamping point 42 disengages from the limit hole 61, then it can be unlocked. Such a structure increases the stability and reliability of the product during application, and the operation is simple and easy to understand, which is convenient for maintenance and ensuring the safety of the equipment.

[0052] To realize the setting of the movement of the pressing block 52 in the plugging direction of the connector, more specifically, as Figure 4 、 Figure 7 shown, a tapered surface B53 is provided at the position where the pressing block 52 cooperates with the tail end of the U-shaped elastic piece 41;

[0053] The pull ring assembly 50 further includes a base block 54. The base block 54 is connected to the side wall of the pressing block 52 with the tapered surface B53. A gap for accommodating the tail of the U-shaped elastic piece 41 is formed between the base block 54 and the tapered surface B53. Pull rods 51 are arranged on the pressing block 52 and the base block 54 along the plugging direction of the connector, and a pull ring 57 is arranged at the movable end of the pull rod 51.

[0054] When it is necessary to control the separation of the connector from the external device, pull the pull ring 57 to drive the pressing block 52 to move towards the end position through the pull rod 51 and the base block 54. At this time, the tapered surface B53 gradually squeezes the tail end of the U-shaped elastic piece 41, and the tail of the U-shaped elastic piece 41 moves away from the pressing block 52, and the clamping point 42 disengages from the limit hole 61, and the operation is simple.

[0055] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 shown, a large-current duckbill connector further includes a housing 10, an inner base 20 assembled inside the housing 10, and a contact assembly 30 assembled on the inner base 20. The housing 10, the inner base 20 and the contact assembly 30 form the main body of the connector. Among them, the contact assembly 30 is mainly composed of copper alloy, stainless steel and rivets, and is mainly used for conducting electricity.

[0056] An installation groove 22 and a sliding groove 23 communicating with the installation groove 22 are provided on the inner base 20; the base block 54 is located inside the installation groove 22, refer to Figure 1, the pull rod 51 is in sliding fit with the sliding groove 23. The pull rod 51 and the pull ring 57 extend to the outside of the housing 10, facilitating the unlocking operation of the connector. Moreover, the setting of the sliding fit between the pull rod 51 and the sliding groove 23 restricts the movement path of the pressing block 52, ensuring that the pressing block 52 moves in the plugging direction of the connector. In the large-current duckbill connector of this technical solution, the pull ring assembly 50 is within the coverage of the inner base 20, and the connector itself does not need to increase space to accommodate the pull ring assembly 50, thus ensuring the size of the original product.

[0057] In this technical solution, the pressing block 52 uses the rebound of the tail of the U-shaped elastic piece 41 as the power to push the pressing block 52 back to the starting position, which has problems such as jamming or non-rebound during the unlocking process. Therefore, this solution is further optimized, such as Figure 5 , Figure 7 As shown in the figure, a limiting groove 26 communicating with the installation groove 22 is provided on the inner base 20; a spring 55 is cooperatively arranged on the base block 54, and a limiting block 56 assembled in the limiting groove 26 is arranged at the movable end of the spring 55. The arrangement of the limiting block 56 assembled inside the limiting groove 26 ensures that the spring 55 runs along a certain track.

[0058] Refer to Figure 7 , when the pressing block 52 moves to the end position (moves to the right), at this time the spring 55 is compressed. After not controlling the pressing block 52, under the action of the spring 55, it drives the pressing block 52 to move back to the starting position (moves to the left) for reset. In this technical solution, the method of combining the elastic force of the U-shaped elastic piece 41 with the elasticity of the spring 55 to drive the pressing block 52 to reset ensures the smooth return of the pressing block 52 and avoids problems such as jamming or non-rebound during the unlocking process.

[0059] As Figure 4 , Figure 5 As shown in the figure, a first positioning groove 24 communicating with the installation groove 22 is formed on the inner base 20. One end of the base block 54 is inserted into the inside of the first positioning groove 24 to limit the leftmost position of the pressing block 52; two relatively distributed positioning protrusions A27 are provided on the inner base 20. A section of the pull rod 51 far from the pull ring 57 extends outward to form a positioning protrusion B59; the pull rod 51 passes through between the two positioning protrusions A27. When the pressing block 52 moves to the end position, the positioning protrusion B59 abuts and cooperates with the positioning protrusion A27 to limit the rightmost position of the pressing block 52. At the same time, the housing 10 limits the upper end of the pressing block 52 through the pull rod 51, and the sliding groove 23 and the pull rod 51 in sliding fit limit the lower end of the pressing block 52, ensuring the stability of the pull ring assembly 50 relative to its position inside the connector.

[0060] At the same time, the cooperation between the base block 54 and the first positioning groove 24, and the setting that the pull rod 51 passes through between the two positioning protrusions A27 further limit the movement path of the pressing block 52.

[0061] In this technical solution, the determination of the positional relationship of the shrapnel assembly 40 inside the connector is specifically as follows Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, a shrapnel slot 21 is provided on the inner base 20. The head end of the U-shaped shrapnel 41 is assembled inside the shrapnel slot 21. There are gaps between the middle part and the tail end of the U-shaped shrapnel 41 and the inner base 20, reserving space for the tail of the U-shaped shrapnel 41 to move away from the pressure block 52. At the same time, to achieve the cooperation relationship between the shrapnel assembly 40 and the device substrate 60, the clamping point 42 penetrates the side wall of the housing 10 and cooperates with the limit hole 61.

[0062] In the shrapnel assembly 40 of this technical solution, the head end of the U-shaped shrapnel 41 is assembled inside the shrapnel slot 21, and the tail end of the U-shaped shrapnel 41 is covered by the pressure block 52, while the pressure block 52 is assembled in the installation groove 22, that is, the entire shrapnel assembly 40 is also within the coverage of the inner base 20. The connector itself does not need to increase space to accommodate the shrapnel assembly 40, ensuring the size of the original product. That is, the large-current duckbill connector in this technical solution adds a position indication and locking function without increasing the size of the original product and without affecting the electrical performance, increasing the stability of the product.

[0063] To ensure the service performance of the shrapnel assembly 40, it is optimized, specifically as follows Figure 4 , Figure 6 As shown, a tapered surface A43 is provided at the position where the tail end of the U-shaped shrapnel 41 cooperates with the pressure block 52. The tapered surface A43 is arranged in cooperation with the tapered surface B53, improving the smoothness of the cooperation between the pressure block 52 and the U-shaped shrapnel 41. When performing the mating operation of the connector, the tapered surface A43 cooperates with the device substrate 60, facilitating the pressing of the tail end of the U-shaped shrapnel 41 into the housing 10, improving the convenience of the plugging and mating.

[0064] A second positioning groove 25 communicating with the installation groove 22 is provided on the inner base 20. A limit boss 44 is provided on the U-shaped shrapnel 41, and the limit boss 44 is in sliding cooperation with the second positioning groove 25, that is, controlling the moving direction of the tail end of the U-shaped shrapnel 41 perpendicular to the plugging direction of the connector, ensuring the stability of the U-shaped shrapnel 41 during operation.

[0065] To facilitate the assembly of the inner base 20, the contact assembly 30, the shrapnel assembly 40, and the pull ring assembly 50, the housing 10 is of a split type, as follows Figure 1 , Figure 2 As shown, the housing 10 includes a housing A11 and a housing B12 distributed oppositely. The housing A11 and the housing B12 are fixed by a rivet group 13, and the U-shaped shrapnel 41 penetrates the mating part of the end faces of the housing A11 and the housing B12.

[0066] As follows Figure 2, Figure 8 As shown, the rivet group 13 includes a plurality of rivets A131, and the rivets A131 serve to connect the housing A11 and the housing B12.

[0067] A plurality of rivets B132, while connecting the housing A11 and the housing B12, abut against the side wall of the inner base 20, that is, limit the position of the inner base 20. To improve the limiting effect, grooves matching the rivets B132 are provided on the side wall of the inner base 20 to increase the contact area between the inner base 20 and the rivets B132.

[0068] At least one rivet C133, while connecting the housing A11 and the housing B12, penetrates through the inner base 20 to further control the position of the inner base 20 inside the outer shell 10.

[0069] As Figure 4 , Figure 8 shown, a strip hole 58 is provided on the pull rod 51, and the rivet C133 penetrates through the strip hole 58. When the pressing block 52 moves in the plugging direction of the connector, the rivet C133 moves in the strip hole 58. By limiting the pull rod 51, the stability of the pressing block 52 is further improved to ensure the use performance of the connector.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A large-current duckbill connector is used in cooperation with an external device, and the device has a device substrate (60), and a limiting hole (61) is formed on the device substrate (60). It is characterized in that, The connector includes: A shrapnel component (40), the shrapnel component (40) includes a U-shaped shrapnel (41) distributed along the insertion direction of the connector, the head end of the U-shaped shrapnel (41) is fixed, and a clamping point (42) is arranged on the side wall of the tail, and the clamping point (42) matches the limiting hole (61); A pull ring component (50), the pull ring component (50) includes a pressing block (52) that moves in the insertion direction of the connector; The U-shaped shrapnel (41) is located on the moving path of the pressing block (52). When the pressing block (52) is at the starting position, the pressing block (52) covers the tail end of the U-shaped shrapnel (41), and the clamping point (42) is inserted into the inside of the limiting hole (61). When the pressing block (52) moves towards the end position, the pressing block (52) squeezes the tail end of the U-shaped shrapnel (41), and the tail of the U-shaped shrapnel (41) moves away from the pressing block (52), and the clamping point (42) disengages from the limiting hole (61).

2. The large current duckbill connector according to claim 1, characterized in that, A conical surface B (53) is arranged at the position where the pressing block (52) cooperates with the tail end of the U-shaped shrapnel (41); The pull ring component (50) further includes a base block (54), the base block (54) is connected to the side wall of the pressing block (52) with the conical surface B (53), a gap for accommodating the tail of the U-shaped shrapnel (41) is formed between the base block (54) and the conical surface B (53), and a pull rod (51) distributed along the insertion direction of the connector is arranged on the pressing block (52) and the base block (54), and a pull ring (57) is arranged at the movable end of the pull rod (51).

3. The large-current duckbill connector according to claim 2, wherein It further includes a housing (10), an inner base (20) assembled inside the housing (10), and a contact component (30) assembled on the inner base (20); An installation groove (22) and a sliding groove (23) communicating with the installation groove (22) are formed on the inner base (20); the base block (54) is located inside the installation groove (22), and the pull rod (51) is slidably matched with the sliding groove (23).

4. The large-current duckbill connector according to claim 3, wherein, A limiting groove (26) communicating with the installation groove (22) is arranged on the inner base (20); A spring (55) is cooperatively arranged on the base block (54), and a limiting block (56) assembled in the limiting groove (26) is arranged at the movable end of the spring (55).

5. The large-current duckbill connector according to claim 4, characterized in that, A positioning groove one (24) communicating with the installation groove (22) is formed on the inner base (20), and one end of the base block (54) is inserted into the inside of the positioning groove one (24); Two relatively distributed positioning protrusions A (27) are arranged on the inner base (20), and a positioning protrusion B (59) is formed by extending outward a section of the pull rod (51) away from the pull ring (57); the pull rod (51) passes through between the two positioning protrusions A (27), and when the pressing block (52) moves to the end position, the positioning protrusion B (59) is in contact and cooperation with the positioning protrusion A (27).

6. The large current duckbill connector according to claim 3, characterized in that, A shrapnel card slot (21) is formed on the inner base (20), the head end of the U-shaped shrapnel (41) is assembled inside the shrapnel card slot (21), there are gaps between the middle and the tail end of the U-shaped shrapnel (41) and the inner base (20), and the clamping point (42) penetrates through the side wall of the housing (10) to cooperate with the limiting hole (61).

7. The large current duckbill connector according to claim 6, wherein, A conical surface A (43) is provided at the position where the tail end of the U-shaped elastic piece (41) cooperates with the pressing block (52); A second positioning groove (25) communicating with the installation groove (22) is formed on the inner base (20). A limiting boss (44) is provided on the U-shaped elastic piece (41), and the limiting boss (44) is in sliding fit with the second positioning groove (25).

8. The large-current duckbill connector according to claim 3, characterized in that, The outer shell (10) includes a shell A (11) and a shell B (12) which are distributed oppositely. The shell A (11) and the shell B (12) are fixed by a rivet group (13), and the U-shaped elastic piece (41) penetrates through the end face mating part of the shell A (11) and the shell B (12).

9. The large-current duckbill connector according to claim 8, characterized in that, The rivet group (13) includes a plurality of rivets A (131), and the rivets A (131) connect the shell A (11) and the shell B (12); A plurality of rivets B (132), the rivets B (132) connect the shell A (11) and the shell B (12) and are in contact with the side wall of the inner base (20) at the same time. A groove matching the rivets B (132) is provided on the side wall of the inner base (20); At least one rivet C (133), the rivet C (133) connects the shell A (11) and the shell B (12) and penetrates through the inner base (20) at the same time.

10. A large current duckbill connector according to claim 9, characterized in that, A strip-shaped hole (58) is provided on the pull rod (51), and the rivet C (133) penetrates through the strip-shaped hole (58).

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